{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["process parameter", "engineering feature", "application"], "input": "One type has a low melting point , and the other a high melting point ."}
{"process parameter": [], "engineering feature": [], "application": []}